# Idea x Knock vs AI

The clearest difference is update cadence: Idea x Knock at weekly against AI's every 5 months. Idea x Knock also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Idea x Knock ships an update weekly, AI every 5 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Idea x Knock | AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/ai-dea-ai-idea-concretization/id6446606152/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | — | Ad-supported |
| Size | 23 MB | 74 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Kosuke Shimada](https://appshunter.io/developer/1529796493) | [yu nakamura](https://appshunter.io/developer/1079316668) |

## What reviewers say

### Idea x Knock

[App page](https://appshunter.io/ios/app/idea-x-knock/id1613942064)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI

[App page](https://appshunter.io/ios/app/ai-dea-ai-idea-concretization/id6446606152)

This app leverages AI to transform simple memos into detailed, actionable ideas. It helps users expand creativity and explore new perspectives, ideal for those who need help concretizing or refining initial concepts.

**Highlights:** Quick memo function, AI-generated idea provision, Detailed idea expansion, Multiple idea perspectives, Idea saving and management

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Idea x Knock free?

Idea x Knock is free to download, with no in-app purchases.

### Is AI free?

AI is free to download, with no in-app purchases.

### Do Idea x Knock or AI have ads?

Both Idea x Knock and AI show ads.

### Which is updated more often, Idea x Knock or AI?

Idea x Knock ships an update weekly, and AI every 5 months. Most recently, Idea x Knock was updated on November 3, 2026 and AI on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*